If it’s any consolation, I felt like this around then. Your hormones are going haywire and some people kept saying why you feeling this way? You’re having a baby! It is totally normal. As others say, try to go out for 5-10mins or invite a friend over. There is also such thing as pre-natal depression not that I think it’s this but something to bare in mind 🙏🏻
Depending how long you're feeling like this for, it's worth talking with midwives or GP. As above poster has said prenatal depression is a thing and is more common than you think. As someone who has been depressed, that is how I feel when I am. If you are able, doing things that make you feel better like going outside, some light exercise, seeing friends and family, whatever you normally would enjoy is good anyway. But I feel you, I have felt that for different periods throughout pregnancy.
I was the exact same when I was pregnant but with me it put a strain on my relationship I was that bad I found the things that helped me was seeing my friends or even asking my partner to come baby shopping